Single port ground block



FIG. 1 is a top front side perspective view of a single port groundblock showing associated components in phantom showing my new design.

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view, the right side being a mirrorimage thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a top front, left side perspective view of the single portground block shown in FIG. 1.

The broken lines illustrating a screw and nut in position is forillustrative purposes only and forms no part of the claimed design.

The ornamental design for a single port ground block, as shown anddescribed.